ICE3BS03LJG Infineon Integrated Circuit (Small Outline Packages) In Stock
The ICE3BS03LJG is a current-mode PWM switching controller from Infineon, operating from 10.5 V to 26 V input with a 73.7 kHz switching frequency and an 8-pin DSO package. It integrates built-in soft-start and protection features, making it a robust solution for offline flyback and forward converter power supply designs.
- Manufacturer
- Infineon
- Package
- Small Outline Packages
- Pin Count
- 8
- Lifecycle
- NOT RECOMMENDED
- Datasheet
- ICE3BS03LJG Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.4760(MOQ 250)
- Temp Range
- -25.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of ICE3BS03LJG?
- Current-mode PWM control at 73.7 kHz enables precise cycle-by-cycle current limiting and fast load transient response
- Wide input voltage range of 10.5 V to 26 V accommodates varied auxiliary supply conditions in offline power supplies
- Integrated soft-start and over-current protection reduce external component count in flyback converter designs
- Compact 8-pin DSO package minimizes PCB area in space-constrained SMPS board layouts
- Fixed-frequency operation simplifies EMI filter design and meets conducted emissions limits
What is ICE3BS03LJG used for?
The ICE3BS03LJG is primarily used in offline switched-mode power supplies such as flyback and forward converters found in AC-DC adapters, set-top boxes, and industrial power modules. Its current-mode control architecture provides inherent over-current protection and excellent line regulation for output voltage ranges typically between 5 V and 24 V. The device is also suitable for auxiliary power stages in motor drives and UPS systems where a compact, reliable control IC is required.
What are the specifications of ICE3BS03LJG?
| Pbfree Code | No |
| YTEOL | 3 |
| Analog IC - Other Type | SWITCHING CONTROLLER |
| Control Mode | CURRENT-MODE |
| Control Technique | PULSE WIDTH MODULATION |
| Input Voltage-Max | 26V |
| Input Voltage-Min | 10.5V |
| Input Voltage-Nom | 18V |
| JESD-30 Code | R-PDSO-G8 |
| JESD-609 Code | e3 |
| Number of Functions | 1 |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SOP8,.25 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| Surface Mount | YES |
| Switcher Configuration | BUCK-BOOST |
| Switching Frequency-Max | 73.7kHz |
| Technology | BICMOS |
| Terminal Finish | Tin (Sn) |
| Terminal Form | GULL WING |
| Terminal Pitch | 1.27mm |
| Terminal Position | DUAL |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 3 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.60 |
| Country of Origin | Austria, Mainland China, Malaysia |
Where can I find the ICE3BS03LJG datasheet?
ICE3BS03LJG Datasheet DownloadOfficial datasheet from Infineon
What are equivalent replacements for ICE3BS03LJG?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What switching frequency does the ICE3BS03LJG operate at, and how does it affect transformer sizing?
The ICE3BS03LJG operates at a fixed switching frequency of 73.7 kHz. Higher frequencies allow transformer designers to use smaller core sizes compared to 50 kHz designs, reducing transformer weight and PCB area. The fixed frequency also simplifies EMI filter design for conducted emissions compliance in offline power supplies.
What input voltage range does the ICE3BS03LJG support for auxiliary power supply stages?
The ICE3BS03LJG accepts a supply voltage from 10.5 V minimum to 26 V maximum, with a nominal operating point of 18 V. This range accommodates typical auxiliary winding voltages derived from mains-connected flyback converters in AC-DC adapters and industrial power modules operating from 85 V to 265 V AC input.
How does current-mode control in the ICE3BS03LJG improve protection compared to voltage-mode PWM controllers?
Current-mode PWM control in the ICE3BS03LJG senses the switch current every switching cycle, allowing cycle-by-cycle over-current limiting that protects the power transistor and transformer from fault conditions without a slow feedback loop. This inherent protection reduces recovery time from output short circuits compared to voltage-mode controllers that rely only on the error amplifier.
Which converter topologies are best served by the ICE3BS03LJG in a compact 8-pin DSO package?
The ICE3BS03LJG is optimized for single-ended flyback and forward converter topologies delivering output power levels up to approximately 30 W. The 8-pin DSO footprint fits easily on the primary-side control section of compact AC-DC adapters and set-top box power boards, where integrating soft-start, gate drive, and current-mode feedback in a single IC reduces BOM count.
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Why Buy from FindMyChip
About Infineon
Infineon is a leading electronic component manufacturer. FindMyChip sources Infineon ICs directly from authorized China distributors, offering competitive pricing and reliable stock.
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 250+ | $0.5730 | $143.25 |
| 500+ | $0.5610 | $280.50 |
| 2500+ | $0.4760 | $1190.00 |
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